Propulsion means for power shovels, and the like



May 28, 1929. w W SLOANE 171'5149V PROPULSION MEANS FOR POWER SHOVELSAND THE LIKE.

Filed April 30, 1926 3 Sheets-Sheet l ornay/ May 28 l929- w. w. SLOANE1,715,149

PROPULSION MEANS FOR POWER SHOVELSAND THE LIKE Filed April 30, 1926 3Sheets-Sheet 2 y @QAM/wea? ZMLLJEW May 28, 1929. w. w. sLoANE PROPULSIONMEANS FOR POWER SHOVELS AND THE LIKE Filed April 30, 1926 3 Sheets-Sheet3 lil. I

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Patented May 28, i929.

NHT@ TTS PIET FiCo WILLIAM W. SLOAN E, 0F CHICAGO, ILLINOIS, ASSIGNOR T0GOODMAN MANUFACTUR- ING COMPANY, 0F CHICAGO, ILLINOIS, A CORPORATION 0FILLINOIS.

PROPULSION MEANS'FOR POWER SHOVELS, AND THE LIKE.

original application filed Cctocer 29, 1925, Serial No.l 65,549. Dividedand this application led April 30, 1926. Serial No. 105,630

rlhis invention relates to continuous tread propulsion means andparticularly to such means as applied to power shovels although notlimited to this use alone, and the general objects thereof reside in theprovision of such means which is well adapted for its purpose and whichis particularly adapted for application on power shovels for use inconfined spaces, such as in mines.

Referring now to the drawings:

Figure 1 is a side elevation of a power shovel embodying one form of myinvention' F igure 2 is a horizontal sectional view through the centralpart of the machine;

Figure 3 is an enlarged partial section on the line 3 3 of Figure 2; and

Figure 4 is a rear elevation of the machine with parts broken away andin section and with parts omitted.

Like numerals refer to like parts throughout the several figures.

Referring to the drawings 1 designates a base frame which is carried onlaterally spaced continuous tread mechanisms 2 of usual constructionwhich are adapted for the propulsion of the shovel.

Mounted centrally upon the base frame 1 is a vertically disposedcylinder 3 containing a piston 4, arranged so that the piston may beraised by fluid pressure to engage a fined part, such as a roof, thusforming a holding jack for the machine while it is in operation.

A turntable or rotatable frame 5 is carried by the base 1 for movementaxially about the vertically disposed cylinder 3, as best shown inFigure 4, and this turntable carries'tlie major portion of the operatingmechanism.

An electric motor 6 and a fluid pressure pump 7 are mounted on the.turntable and are disposed in horizontal longitudinal arrangement alongone side thereof. reduction gear transmission mechanism 8, including acounter shaft 9, operably connects the adj aeent ends of the shafts ofthe motor and pump. See Figures 1 and 2. Carried for independentrotation on the counter shaft 9 is a pair of opposing bevel gears 10,and these gears oppositely mesh with a revoluble bevel gear 11 carriedwith the turntable 5, and this bevel gear is operably connected with alarge internal gear 12, secured on the base 1 and disposed coaXiallywith the turntable, by means of a gear train 13, carried with theturntable for angularly moving the turntable on the base. See Figures 1and 2.

Releasable frictional driving devices 14, of usual construction, arecarried on the counter shaft v9 for operable connecting respective bevelgears 10 with the counter shaft 9 to drive the turntable in eitherdirect-ion from the motor 6, said devices being manually controlled fornormal release and for alternate engagement by means of a hand lever 15on the opposite or controlside of the turntable and operably connectedwith said devices by meansA of suitable mechanism 16.

C arried with the turntable is a beam 17 which carries a scoop 18secured at the frontend thereof. The beam comprises two longitudinalmembers disposed on opposite sides of the centrally disposed holdingjack, and is mounted for longitudinal movement upon an elevating arm 19.This elevating arm is journaled at its rear end on a shaft 21, carriedby the turntable at an elevated point to the rear of the holding jack,for providing vertical movement of the scoop.

Operation of the holding jack and of the scoop is effectedhydraulically, under manual control, in a mannerunnecessary to bedescribed, the pump 7, driven by the motor 6, supplying the fluidpressure for this purpose.

Means is provided whereby the continuous tread mechanisms are driven ina controlled manner and will now be described. A horizontal transverselydisposed transmission shaft 145 is journaled in spaced bearings 146 atrespective sides of the frame 1 at the rear thereof. See' Figures 2 and4. A primary internal gear member 147 is secured on this shaftintermediate said bearings. Two linal drive internal gear members 148are journaled on the shaft 145 between said primary gear member 147 andrespective of said bearings 146, and chain and sprocket drive devices149 serve to drive said contin nous tread mechanisms 2 from respectiveadjacent final drive gear members 148. Two intermediate members 150 arejournaled on the shaft 145 between said primary gear member 147 andrespective final drive membeis 148, and planetary gears 151 are carriedby respective of said intermediate members and mesh with said primarygear members 147 and respective adjacent final drive members 148 fordriving the same from said primary gear member. The final drive members148 and the intermediate members 150 are provided with Vexternalfriction brake sur-l faces and surrounding` respective of these surfacesare bra-ke bands 152 contractable.

these surfaces for frictionally. engaging-,ther

Same- 1;

J ournaled on the rear end of the base frame 1 is a pair of horizontaltransversely dlsposed telescoped shafts 153, and secured on each ofthese shafts is a pair of arms 154. See Figures 2 and 3. `Each 154 ispivotally connected at diametrlcally opposite points to the ends ofrespective of a pair of said brake bands 152 respectively engageablewith. an intermediate member 150 and the associated final drive member148. These arms are adapted for releasably contracting the brake bands152 about respective of'said brake surfaces, by angular movement ofrespective of said shafts 153, and the arms of each of these pairs areangularly spaced for alternately engaging the respective brake bandswith respective brake surfaces with opposite pivotal movements of therespectlve shaft 153. See Figure 3. Frictlonal engagement of ltherespective bands 152 with said intermediate members 150 effects adrlvefrom the shaft 145 to respective continuous tread mechanisms in anobvious manner, and frictional engagement of the respective band 152with said final drive members 148 effects retarding of respectivecontinuous tread mechanisms in a likewise obvious manner.

It will be observed that each shaft 153 controls the brake bands 152 ofa respective continuous tread mechanism for alternately driving orretarding the same, so that either or both continuous tread mechanismsmay be driven from the shaft 145 or either mechanism driven and theother retarded for steering the shovel While it is propelled.

For purposes of manually controlling the shafts 153 a pair of radialarms 155 are secured on respective shafts 1.53, and a pair of handlevers 156 are detachably engaged with respective of said arms andproject rearwardly from the frame 1 f or actuatit L. y an operatorstanding on the ground whereby the operator controls the propulsion andsteering of the shovel while walking along with the shovel bymanipulation of the levers 156.

. Then the shovel is not being moved the levers 156 may be detached fromthe arms 155 so that they cause no interference.

The manner in which the shaft 145 is' driven from the mot-or 6 will nowbe described.' As hereinbefore described the motor 6 and pump 7 aredisposed in horizontal longitudinal arrangement along one side of theturntable, and the turntable is operated angularly from the reductiongear transmission operably connecting the adjacent ends of the motor andpump shafts. Secured on the rear end of the shaft of the pump 7 is abevel gear 158, and a bevel gear 159 is journaled on pair of these armsavertical axis on an extension 160 at the rear end of the base of thepump 7 and meshes with the gear 158. -Secured on the\ end 'of the'fshaft 145 corresponding with the side ofthe turntable on which thepump 7 is disposed vis a bevel gear 161, and a bevel gear 162isjournaled on a vertical axis on an extension 163 of the base 1 andmeshes with the gear 161. The gears 159 and 162 are disposed to align inthe position of the turntable shown in the drawings. The gears 159 and162 are provided with splined axial bores, and a splined positive clutchshaft 164 is engaged in the bore of the gear 159 for driving and foraxial movement with res "ect thereto to engage the splined bore o 'thegear 162 .for

driving and to disengage therefrom, as shown in the drawings, to permitangular movement of the turntable on the base. A shifter collar 165 ismounted on the intermediate 'portion ofthe clutch shaft 164, and thisshifter collar is engaged by a lever 166 secured on a transverselydisposed pivoted shaft 167 carried on the turntable. A handlever 168 isalso secured on the shaft 167 for axially moving the clutch shaft intoand out of engaging position, and a usual latch device 169 is associatedwith this hand lever for releasably securing the clutch shaft 164 in theaxial positions thereof. See Figure 4.

y In order that the shovel may be conveniently moved along railwaytracks with the continuous tread mechanisms 2 engaged on respectiverails 170 of the track for propelling movement therealong, removableguide means, generally indicated at 171, is provided which isunnecessary to be described for the present purposes. This guide meansis fully described and claimed in my co-pending application for LettersPatent of the7 United States for improvement in track guided Vehicles,Serial No. 105,629, filed April 30,1926, which is a division of myco-pending application for Letters Patent of the United States forimprovements in power/ shovels. Serial Number 65,549, filed Octdber 29,-1925, of which latter application this application is a lso a division.

' While I have shown herein and described one form of my invention, Ivdo not wish to be limited to the precise details of construction orarrangements herein shown and described except as specifically limitedin the Iappended claims. i

I claim as my invention:

1. In a device of the character described, the combination with a frameand two cooperating laterally spaced continuous tread mechanismscarrying the same, of a horizontal transversely disposed transmissionshaft Journaled in spaced bearings at respective sides of the frame, aprimary gear member .secured on the shaft intermediate said bearings,two final drive-gear members journaled on the shaft between said primarygear memizo ber and respective of said bearings for driving respectiveadjacent continuous tread mechanisms and provided with external brakesurfaces, two intermediate members journaled on the shaft between saidprimary gear member and respective final drive members and 'providedwith external friction brake surfaces, planetary gears carried by saidintermediate members and meshing with said primary gear member andrespective adjacent final drive gear members, friction brake devicesengageable with respective brake surfaces, and a pair of manuallyactuated devices each adapted for alternately engaging the brake devicesof a respective intermediate member and the associated final drivemember.

2. In a device of the character described, the combination with a baseand a turntable carried by the base for movement thereon, of twocooperating laterally spaced continuous tread mechanisms carrying thebase, an electric motor on the turntable, transmission mechanism on thebase comprising a pair of manually controlled releasable frictionaldriving devices for independently driving respective continuous treadmechanisms, a pair of manually controlled releasable friction brakedevices for retarding respective continuous tread mechanisms, and meansfor driving said transmission mechanism from the motor includingcooperating positive clutch members carried respectively With the baseand turntable and disengageable to permit movement of the turntable onthe base.

3. In a device of the character described, the combination with a baseand a turntable carried on the base for movement thereon, of continuoustread means carrying the base, an electric motor on the turntable, andmeans for operably connecting the motor with said continuous tread meansand including cooperating positive clutch members carried respectivelyWith the base and turntable and disengageable to permit movement of theturntable on the base.

4. In a device of the character described, the combination With a baseand a turntable carried by the base for movement in a horizontal plane,of propulsion means carrying the base, a prime mover on the turntable,and means for operably connecting the prime mover With said propulsionmeans and including cooperating positive clutch members carriedrespectively With the base and turntable on vertical axes aligned in oneposition of the turntable, one of said clutch members being axiallymovable for engagement and disengagement With the other.

5. In a device of the character described, the combination with a baseand a turntable carried by the base for movement thereon in a horizontalplane, of continuous tread means carrying the base, an electric motor onthe turntable and disposed on a horizontal axis,

a pair of meshed bevel gears on the turntable one of which is disposedon a horizontal axis for driving from the motor and the other of whichis disposed on a vertical axis, a revoluble transmission member on thebase for driving said continuous tread mechanism and disposed on avertical axis aligning with said second mentioned bevel gear in oneposition of the turntable, and a positive clutch member for operablyconnecting said second mentioned gear and transmission member andengaged and carried with one thereof for driving and for axial movementwith respect thereto to engage and disengage the other.

6. In a device of the character described, the combination With a baseand a turntable carr1ed by the base for movement thereon in a horizontalplane, of propulsion mechanism carrying the base, a transmission membercarried by the base for driving said propulsion mechanism and disposedon a horizontal axis, a `pair of meshed bevel gears on the base one ofwhich is disposed on .a horizontal axis for driving said transmissionmember and the other of which is disposed on a vertical axis, a primemover on the turntable and disposed on a horizontal axis, a second pairof meshed bevel gears on the turntable one of which is disposed on ahorizontal axis for driving from the prime mover and the other of whichis disposed on a vertical axis aligning with said second mentioned gearin one position of the turntable, and a positive clutch member carriedand engaged with one of said gears disposed on vertical axes for drivingand for axial movement to engage and disengage the other of these gears.

7. In a device of the character described, the combination With a baseand a turntable carried by the base for movement thereon, of contlnuoustread means carrying the base, an electric motor and a Huid pressurepump on the turntable and disposed in horizontal longitudinalarrangement, means operabl connecting the adjacent ends of the shafts ofthe motor and pump, releasable means operably connected with said lastmentioned means for driving the turntable on the base from the motor,and means operably connected With the other end of the pump shaft fordriving said continuous tread mechanism from the motor and adapted forpermitting movement of the turntable on the base.

8. In a device of the character described, the combination With a baseand a turntable carried by the base for movement thereon in a horizontalplane, of continuous tread means carrying the base, an electric motorand a fluid pressure pump on the turntable and disposed in horizontallongitudinal arrangement along one side thereof, reduction geartransmission means operably connecting adjacent ends of the shafts ofthe prime mover and pump and including a counter shaft, releasable meansoperably connected with said counter shaft for driving the turntable onthe base from the prime mover, a. pair of meshed bevel gears` carriedwith the turntable one of Whlchis secured on the other end of the pumpshaft and the other of which is disposed on a Vertical axis, atransmission member on the base for driving said continuous tread meansand disposed on a vertical axis aligning' with said se'cond mentioned 10gear in one position of the trntable, and ,a

positive clutch member for operably connect-A ing said second mentionedgear and said' transmission member and engaged-and carri'ed with onethereof for driving and for axial movement with respect. thereto toengage and disengage the other.

Signed at Chicago, in the coilnty of Cook and Sta-te ofIllinois,pthis`28th day of April,

A. D. 1926. WILLIAM W. SLOANE.

